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April 2, 2015

April 2, 2015

Posted by **danielle** on Monday, October 20, 2008 at 11:55pm.

Solve the system of equations using the substitution method.

x-y=-1

5x+4y=-23

- algebra -
**Rico_TLP**, Tuesday, October 21, 2008 at 12:02amEqn (1) to be mly by 4,

then we have 4x-4y=-4,

(2)5x+4y=-23

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9x+ 0=-27

9x=-27

x=-27/9=-3

x=-3.

to get y,

we substitute in the eqn(1)

(x-y=-1) as -3-y=-1

-3+1=y

y=-2.

Therefore, we get x=-3

y=-2

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